<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>活动图</title>
		<style>
			*{
				list-style: none;
				margin: 0;
				padding: 0;
			}
			/*切片:中控区  1104*260*/
			section div#event{
				width: 1104px;
				height: 260px;
				background: #000000;
				margin: 0 auto;
			}
			/*浮动  li元素 */
			section div#event ul li{
				float: left;
				margin-left: 10px;
				margin-top: 25px;
			}
			section div#event ul li the first_child{
				margin-left: 0;
			}
			
			/*调整图片：260*200*/
			section div#event ul li img{
				width: 260px;
				height: 200px;
			}
			section div#event ul li:hover{
				filter: drop-shadow(0 0 5px #8c8c8c);
			}
		</style>
	</head>
	<body>
		<-- section元素：页面区域分区、文章分节、章节划分-->
		<section>
         <!-- 中控区-->
			<div id="event">
				<ul>
					<li><img src="" alt="" /></li>
					<li><img src="" alt="" /></li>
					<li><img src="" alt="" /></li>
					<li><img src="" alt="" /></li>
				</ul>
			</div>
		</section>
	</body>
</html>